Photographic appliance.



' N0.a94,9s7. PATENTED AUG; 4, 1908.- P. 0. BRADBURN, J. H. TYLER & J.B. LOW.

PHOTOGRAPHIC APPLIANCE.

APPLICATION FILED APR. 22, 1907.

Emu/1 INVENTORS I .B. Atlomey UNITED STATES PATENT OFFICE.

FREDERICK ORANDALL BRADBURN, JOHN HORSLEY TYLER, AND JESSE BARNEY LOW,OF

ROCHESTER, NEW YORK.

PHOTOGRAPHIC APPLIANCE.

Specification of Letters Patent.

Patented Aug. 4, 1908.

Application filed April 22, 1907. Serial No, 369,530.

To all whom it may concern:

Be it known that we, FREDERICK ORAN- DALL BRADBURN, JOHN I-IoRsLEYTYLER, and JEssE BARNEY Low, of Rochester, in the county of Monroe andState of New York, have invented certain new and useful Improvements inPhotographic Appliances; and we do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

Our invention relates to an improvement in photographic appliances andmore particularly to improved magazine for photographic plates, theobject of the invention being to provide simple and eflicient meanswhereby photographic plates can be placed into or removed from eitherend of the device without danger of becoming light-struck.

A further object is to so construct the device that it can be operatedin daylight to receive plates from a plate holder or to discharge platesinto a plate holder one at a time.

With these objects in view our invention consists in certain novelfeatures of construction and combinations and arrangements of parts aswill be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal sectional viewof the device. Fig. 2 is a transverse sectional view. Fig. 3 is adetailed view of the holding and releasing device for the plates, andFig. 4 is a view of a slight modification of said device.

The body portion 1 of the carrier is of suf ficient capacity to receivea number of photographic plates and the top as well as the bottomconsists of removable slides, the top slide 2 being movable in suitableslots 3 in the walls of the body portion and the bottom slide 4 beingmovable in similar slots or grooves near the bottom of the body portion.These slides are not unlike the shutter commonly in use with plateholders. The device is provided along three of its sides, at both topand bottom, with flanges 5 to receive a plate holder, and grooves 6 aremade in'the top and also in the bottom of the device, near the inner endthereof, for the reception of the rib on the plate holder to e'liect alight seal. I

In one end of the magazine a bowed-spring 7 is located and bears at itsends against the end wall of the magazine. The spring 7 is madesufficiently less in width than the depth of the magazine to permit aphotographic plate to be disposed on one or the other of the slides 2*4without being engaged by the said spring. The spring 7 is providedcentrally between its ends and at its respective edges with lips 8, eachof which is adapted to engage the end of a hotographic plate next to theone disposed against the slide and press said plate against the opposite end wall 9 of the magazine with sufiic'ient pressure to permit theupper plates to be supported thereby. It sometimes happens that a platewill be slightly longer than the standard size andfor this reason theend wall 9 is provided with a cushion 10 of felt or other suitableyielding material into which the end of a long plate will becomedepressed without affecting the operation of the device.

A plate 11 is secured in the front end of the magazine and through thisplate an arm 12 secured to the spring 7 is adapted to pass freely. Thearm 12 is made with an opening 13 to receive a lever 14 and said leveris provided with a slot 15 for the passage of the curved end of saidarm. The lever 14 has a bearing against the plate 11 so that when it ismoved it will act as a cam to withdraw the arm 12 and the bow-spring 7to which said arm is secured, thus relieving the pressure of said springagainst a plate and releasing said plate. The lever 14 is provided witha lug 16 to engage the plate 11 and act as a stop for said lever so asto properly hold the spring 7 away from the ends of the plates in themagazine.

When several plates are in the magazine, the bottom plate (regardless ofthe position in which the magazine may be held) will rest upon one ofthe slides and the adjacent lip 8 of the spring 7 will engage the nextplate and hold it firmly. If a plate holder be now placed against thebottom of the magazine with its shutter withdrawn, the withdrawal of thebottom slide of the magazine will permit the bottom plate to drop intothe plate h0lder,after which the said bottom slide will be returned, theshutter of'the plate holder closed and the plate holder then removed.Now when it is desired to transfer a plate from the magazine to a plateholder, it is first necessary to operate the cam-lever 14 to withdrawthe spring7 and permit the plate to drop upon the lower slide and becomedisposed in a plane below the lip S on said spring. The cam-lever willthen be moved in the reverse direction and the spring per mitted tocause its lip to engage the end of the next higher plate. The platewhich has thus been released can be transferred to a plate holder in themanner before explained.

It might sometimes happen that when the spring 7 is withdrawn as abovedescribed, the second plate which would be resting upon one of the lips8 of the spring, might follow the lip and not rest upon the bottomplate, and thus not be in position to be engaged by the lip 8 when thespring has been again released, just prior to dropping the bottom platefrom the magazine. To avoid such an occurrence, we provide steps 18, toreceive the edges of the plates and prevent them from being moved towardthe spring 7 when the latter recedes. These stops may be convenientlyformed at respective ends of a plate 19 secured in the end of themagazine behind the spring 7 and said plate is provided with slots 20for the passage of said spring. The plate 19 also serves to preventdisplacement of the spring 7.

It is evident that plates can be transferred from an ordinary plateholder to the magazine and when this is done the spring 7 will bewithdrawn by means of the cam lever 14 to permit the passage of theplates past the hp 8. The magazine may be changed with dry plates in adark room or one at a time from-a plate holder in the daylight. Thesedry-plates can be transferred, one at a time, into a plate holder fromone side of the magazine and after having been exposed in a camera canbe deposited from the plate holder to the other side of the magazine.The entire supply of plates in the magazine can thus be exposed one at atime and replaced into the magazine and they can be subsequently removedfrom the magazine by means of a plate holder, as before described, andtransferred by the latter to a developer.

Instead of providing the spring 7 with lips 8 at its respective edges,the central portion of said spring may be thickened as shown at 17, Fig.4, and the ends of this thickened portion will serve the same purpose asthe lips 8.

Having fully described. our invention what we claim as new and desire tosecure byLetters-Patent is,

1. The combination with a magazine for photographic plates open at itstop and bottom, and slides closing the top and bottom of the magazine,of a bowed spring mounted in the magazine and adapted between its endsto engage the edge of a plate a short distance from one or the other ofsaid slides and force said plate against the opposite wall of themagazine, and a cam device connected with the central portion of thespring for withdrawing the latter to release a plate and permitit todrop upon the adjacent slide and then engage the next plate.

2. The combination with a magazine and slides closing the top and bottomthereof, of a bowed spring located in one end of the magazine, a cushionlocated in the other end of the magazine, a projection on said springintermediate of its ends to engage the edge of a plate a short distancefrom said slides and push said plate against said cushion and means forwithdrawing the spring so as to release the plate, said means comprisingan arm secured to the intermediate portion of the spring and a lever forwithdrawing said arm and spring.

3. The combination with a magazine and slides closing top and bottomthereof, of a bowed spring mounted in one end of the magazine andprovided with inwardly projecting lips at its respective edges, saidlips being spaced from the slides sufficiently to permit a plate to bedisposed between an edge of said spring and a slide, a slotted armsecured to the central portion oi said spring and passing through theend of. the magazine, a lever having a slot to receive the slotted armand coi'iperate therewith by cam action to withdraw the spring to drop aplate upon one of the slides of the magazine and means for limiting themovement of said lever.

4. The combination with. photographic plates, having slide for closingthe bottom of the same, of a bowed spring mounted in the magazine andhaving a lip at the center of its edge to engage the edge of aphotographic plate a short distance from the slide, meansfor withdrawingsaid spring, and a stop for preventing a photographic plate fromfollowing the spring when the latter is made to recede.

5. The combination with a magazine for photographic plates having aslide for closing the bottom thereof, of a bowed spring in the magazinehaving a lip on its edge to engage the edge of a photographic plate,means for withdrawing said spring, and a plate secured in the magazinebehind the spring'and provided with slots for the passage of the spring,and stops at the ends of said plate to receive the edges of thephotographic plates.

In testimony whereof, we have signed this specification in the presenceof two subscribing witnesses.

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